Buttons and pressure plates other than the oak variants are not in the Redstone Blocks tab

This is working as intended, for wood, only oak buttons and pressure plates are included.

Only weird thing I see is only 1 type of the wood items, buttons, doors etc, are they in the building blocks tab?

Yes they're in the building blocks tab, ones here are only displaying variants with functional difference

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So the reason is that the rule for variants in the Redstone tab is that variants should only be present if they have any functional difference. For Rafts, it is a very small functional change, but the reason they're still there is the seat position of passengers is higher.

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